Spring attachment for drilling-machines



A. P. SCHMIDT.

SPRING ATTACHMENT FOR DRILLING MACHINES.

APPLICATION FILED MAR. r. 1917.

1,359,845, Patented Nov. 23, 19205 2 SHEETS-SHEET 1- A. P. SCHMIDT.

SPRING ATTACHMENT FOR DRILLING MACHINES.

APPLICATION FILED MAR. I. 1917.

mwms,

Patented Nov. 23, 1920.

2 SHEETS-SHEET 2.

, uNiTEosrArEs PA ENT OF ICE.-

ALBERT r, sciii r'nr, or SNYDER, COLORADO.

SPRING ATTACHMENT roa perfume- ACHINES.

' To all whom ifmag concern:

, ierk of the cable.

' Be it known that I, ALBERT P. Scrnunrr, a citizen of the United States, residin at Snydenin the county of Morgan and tate of Colorado, have invented certain new and useful Improvements in Spring Attachco ments for Drilling-Machines; and I hereby declare the following to be a full, clear, andexact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same. I

The invention relates to a spring'attachmerit for drilling machines.

The object of the present invention is to provide a simple, practical and efficient spring attachment for portable drilling machines adapted to-enable a steel cable to be employed and to take the jerk out ofthe drilling machine thereby increasing the, durability of the machine and the injury to the frame of the machine to which the latter is subjected when a steel cable is employed without relieving the frame of the With these and other objects in view, the invention COIlSlSlSSdHlZhQ- construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings and pointed .out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any ofthe advantages of themv ention.

In the drawings:

Figure 1 is an end elevation'of a portion of a drilling machine provided with a spring attachment constructed in accordance with this invention.

Fig. 2 is a vertical sectional view of the same.

Figs. 3 and 4: are detail views illustrating the construction of the slidable and pivotal arms.

Specification of'Letters'TPatent. Patgntgd N. v 23 152,20. Applicationfi led March 7, 191?. Serial No. 153,012. i

In the accompanying drawings in which is illustrated the preferred embodimentof the' invention 1 designates the upright foldable derrick member of. a portable well drilling machine having a wheeled frame 2 andprovided at opposite sides thereof with ncllned braces 23 spaced apart at their upper ends to receive the foldable derrick 'member 1. The foldablefderrick memberg 1 is connected to the upper ends of the inclined braces by ahorizontal' pivot 4:, which passes through a transversely disposed eyeor bearingopening 5 of a bearing plate 6/ The bearing plate 6, which is provided with upper and lower slots 7 isv connected to derrick niember l by bolts 8 extendingthroughthe slot? and adapted topermit a sliding movement of the derrickmemher 1 with relationto the transverse pivot 4, which is in the form ofa bolt. The derrick member 1 is adapted to foldto a horizontal position upon the machine inthe usual man ner an when arranged in an upright po- "sition' its lower portion is received within a horizontally disposed guide 9 provided I" with inwardly projecting spaced lugs 10 located at the side edges of the derrick memher '1 and adapted to receive, and guide the said member between them. The horizontal guide?) is detachably bolted to the inclined braces 3 at 11 andthe'saidf guide 9 is removed when it is desired to fold the derrick member 1.

The lower end ofthe derrick member is right operative position. The spring 12 is adapted to relieve the frame of the machine of the jerk of the cable 13 and it enables a wire cable to be employed instead of the ordinary rope, thereby increasing the durability of the machine and preventing the jar, strain and injurious effect on the frame which necessarily results when a wire cable is employed without cushioning means. The coiled spring is supported upon a plate 14 arranged at the end of the frame of the machine at the outer face of the transverse end beam or member 15 and secured to the same by approximately L-shaped hanger bolts 16 having horizontal upper arms and lower depending vertical the transverse beam or member" 15 and the downwardly extending vertical arms pass through the plate 14. The ends of the hanger bolts are threaded for the reception of nuts arranged upon a coiled cushioning spring 12 p when the said derrick member is-inan up- The upper arms 17 extend through.

l8 and 19. The plate is also designed to be supported by a jack 20 of any ordinary construction, which is placed centrally beneath the plate and the lower end of the spring, which is preferably seated in arecess 21 of the supporting plate 14. Any suitable means tain the usual over-head pulley 22 for the reception of the cable 23, which carries the drilling tools 24 adapted to operate in a well casing 25 and to enable the same to be sunk in the ground in the usual manner. In

the operation of the drilling machine, thedrilling tools are, raised and dropped in the usual manner. The slidable connection between the derrick member 1 and the frame ofthe machine, together with the cushioning device, will relieve the frame of the machine of the jerk of the cable.

What is claimed is:

1. An apparatus of the character described comprising a frame, a pair of upwardly extending bracing members arranged onvthe frame,a derrick member p'ivotally and reciprocally mounted between said bracing members, a bearing plate arranged on said derrick member intermediate its ends there of and having a transverse bearing openlng therein, a pivot element extending through said bearing opening and the upper ends of said bracing members, said bearing plate having elongated slots extending longitudinally thereof on opposite sides of the bearing opening therein, retaining elements extending through said derrick member and adapted to partake of a reciprocatory movement in the elongated slot of said bearing member; and a coil spring mounted on said frame and supporting said derrick member.

2. The combination with a support, a pair of vertically disposed beams mounted thereon, of a standard pivoted intermediate its ends between the beams and capable of being disposed either in a horizontal or vertical position, said standard having sliding connection with the beam at the point of piv otal connection, means carried by the stand ard for guiding an element of a well drilling apparatus, and cushioningmeans engaging the standard when the latter is in a vertical position.

The combinationwith a support and a pair of vertically disposed beams mounted thereon, of a plate provided with longitudinal slots, a drill beam, a bearing carried by the plate, a pivot extending through the bearing and journaled in the beam, fastenv in gs extending throughthe beam and slots in the plate to permit the beam to move longitudinally, and shock absorbing means engaging one end of the drill beam during such longitudinal movement, the drill beam being capable of being disposed in a horizontal position, when not in use. i V

In testimony whereof I aflix my signature in presence of two witnesses.

ALBERT P. SCHMIDT. WVitnesses L. MoLEAN, R. L. BRIOKER. 

